/Engine/Plugins/Interchange/Runtime/Source/Nodes/Public/InterchangeShaderGraphNode.h
The Shader Ports API manages a set of inputs and outputs attributes. This API can be used over any InterchangeBaseNode that wants to support shader ports as attributes.
[UCLASS](Programming/UnrealArchitecture/Reference/Classes#classdeclaration)(BlueprintType, Experimental) class UInterchangeShaderPortsAPI : public [UObject](API\Runtime\CoreUObject\UObject\UObject)